In the last cycle I roundtripped almost all of my gains.

Started with little, made a disgusting amount and proceeded to give it back to the market.
What screwed me was scaling bet sizing up way too quickly.
But I told myself, if I can do it once, I can do it twice and I did. I made it all back and more.
This time, I actually took profits. Moved money into the bank, stabled up in January, traded USD to EUR to protect myself and kept the profits. And got back into the market with discipline and a good understanding of how to size my bets accurately.
I learned a lot about proper bet sizing in the process of running it up and keeping profits the second time and I want to thank @OGDfarmer and @punk9059 in particular for the invaluable advice they gave me.
I think it's more likely to roundtrip once in this space than to make money and keep it the very first time.
The important thing is to learn your lessons from that.
Making money is one skill set and keeping money is another. The good thing is you can learn both.